Simpson shared a picture of a woman standing on a balcony near a beach along with the sensual poem.

“The moon’s souvenir / the boulevardier / a ballerina on the promenade,” he wrote on Instagram. “We open our curtains to the domesticated world / for a natural hour / spinning elvis records / and making love / in the soft jewelled morning.”

Simpson was seemingly referencing his date with Cyrus from Sunday night, in which he crooned Elvis Presley’s Ku-Ui-Po to his new girlfriend. As shown on his Instagram Story, Cyrus leaned on his shoulder as he sang her the romantic tune.

The pop star was impressed by her boyfriend’s tune. Picture: InstagramSource:Supplied

It’s not the first time the Aussie has serenaded the star. Picture: InstagramSource:Supplied

Simpson and Cyrus were first linked in late 2014, but in 2015 Simpson told GQ Australia that they were “just mates.”

They’ve been spending a lot of time together since they were outed as an item earlier this month when they were caught smooching at a store in Los Angeles.

It comes as Cyrus said she was welcoming the “good vibes” after being hospitalised.

Miley Cyrus posted a slew of pics from her hospital bed. Picture: InstagramSource:Supplied